| US 7,541,010 B2 | ||
| Silver doped catalysts for treatment of exhaust | ||
| Paul Worn Park, Peoria, Ill. (US); Virgil Raymond Hester, Edelstein, Ill. (US); Christie Susan Ragle, Havana, Ill. (US); and Carrie L. Boyer, Shiloh, Ill. (US) | ||
| Assigned to Caterpillar Inc., Peoria, Ill. (US) | ||
| Filed on Dec. 19, 2003, as Appl. No. 10/739,324. | ||
| Prior Publication US 2005/0135980 A1, Jun. 23, 2005 | ||
| Int. Cl. B01D 53/56 (2006.01); B01D 53/94 (2006.01); F01N 3/20 (2006.01); G05D 99/00 (2006.01); H05H 1/00 (2006.01) | ||
| U.S. Cl. 423—213.2 [423/213.7; 423/239.1; 423/239.2; 423/DIG. 5; 423/DIG. 10; 422/105; 204/168; 204/169; 204/177; 204/179; 60/274; 60/282; 60/299] | 17 Claims |
| 1. A method of removing NOx from an exhaust stream containing SO2, the method comprising:
flowing substantially an entirety of an exhaust stream containing SO2 through an exhaust treatment element and a plasma reactor upstream of the exhaust treatment element; and
removing at least some of the NOx from the exhaust stream through catalysis,
wherein the exhaust treatment element includes:
a substrate, and
a catalyst deposited on the substrate, the catalyst including silver metal dispersed within a catalyst support material in
an amount of between 6% and about 10% by weight.
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